Patents by Inventor Margaret M. Piwko

Margaret M. Piwko has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Cooling and/or warming shirt
    Patent number: 5787505
    Abstract: In combination with a shirt, one or more pouches which receives a cooling and/or warming pack. The cooling pack comprises sealed compartments containing water or other material which changes state thereby absorbing heat to cool the wearer when the cooling pack is exposed to a predetermined temperature for wearing of the shirt. The warming pack sealingly contains a material which is heatable to store heat and to release the stored heat when the warming pack is exposed to a predetermined temperature for wearing of the shirt. The cooling pack may also be provided as part of a wrist band.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: August 4, 1998
    Inventors: Margaret M. Piwko, James C. Simmons